Tensioning system for cables in prestressed concrete

Details Tensioning system for cables in prestressed concrete Tensioning system for cables in prestressed concrete

1980-09-19

1982-08-24

Taylor, Billy S.

Implements or apparatus for applying pushing or pulling force

Pipe or rod jack

Tie rod tensioner

52223L, 254231, E04C 508

Patent

active

043457401

ABSTRACT:
A system for tensioning stranded or wire cables in prestressed concrete comprises an anchoring head having holes in which are anchored the strands or wires. The anchoring head has a ring in screw-threaded engagement with an exterior surface of the head for providing a reactive support for the anchoring head. An intermediate member is releasably fixed to the anchoring head by rods which extend through holes in the intermediate member and are in screw-threaded engagement with the anchoring head. The intermediate member also has a screw-threaded exterior for engagement with the ring to allow the ring to provide a reactive support for the intermediate member at intermediate stages in a tensioning operation.
The intermediate member is releasably connectable to a tensioning jack thus allowing the jack and the intermediate member to be removed from the anchoring head once tensioning is complete.

REFERENCES:
patent: 2728978 (1956-01-01), Birkenmaier
patent: 3387417 (1968-06-01), Howlett
patent: 3439462 (1969-04-01), Suzuki et al.
patent: 4065098 (1977-12-01), Siegwart et al.

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